EP0590546B1 - Railway traction unit with a superconductive transformer - Google Patents
Railway traction unit with a superconductive transformer Download PDFInfo
- Publication number
- EP0590546B1 EP0590546B1 EP93115499A EP93115499A EP0590546B1 EP 0590546 B1 EP0590546 B1 EP 0590546B1 EP 93115499 A EP93115499 A EP 93115499A EP 93115499 A EP93115499 A EP 93115499A EP 0590546 B1 EP0590546 B1 EP 0590546B1
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- EP
- European Patent Office
- Prior art keywords
- transformer
- coolant
- tank
- transformer according
- supply device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Revoked
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F36/00—Transformers with superconductive windings or with windings operating at cryogenic temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
Definitions
- the invention relates to a rail vehicle with a transformer for its power supply and with a refrigerant supply device.
- a main area of application for transformers of conventional design is in general power plants for the generation of electricity. In such systems, the size of the transformer required is of secondary importance.
- Another area of application for transformers is the use in electric rail vehicles.
- the contact wire voltage is usually reduced to the supply voltage of the traction motors or the power converters by means of the implemented transformer.
- traction transformers and their necessary additional devices such as oil or air coolers including the necessary circulation pumps, there are severe restrictions with regard to weight and dimensions. In comparison to stationary power transformers, which are not subject to such restrictions, this ultimately results in high power losses, which have a low efficiency.
- a rail locomotive of the type mentioned is known from SE-A-8904117.
- the transformer is oil-filled, the oil being used for cooling, that is, for dissipating the heat loss of a oil-flowed heat exchanger trained refrigerant supply device which is connected to the transformer.
- a superconducting transformer is used together with a refrigerant supply device, and that the refrigerant supply device has only one liquid gas container serving as a refrigerant tank, which is connected to the transformer.
- Transformers with superconducting windings have been the subject of numerous worldwide development activities for several years. Due to the low operating temperature of 4 to 6 K, which is required for the superconductors currently available on a large industrial scale in order to maintain their superconductivity, the use of expensive helium-operated refrigeration systems is necessary. A magnet system with such a refrigeration system has become known, for example, from DE-OS 3 743 033.
- liquid nitrogen is provided as the refrigerant, which, compared to helium, enables about 10 times the heat of vaporization to cool a superconducting transformer for 2 with a volume of 1 to 2 m3 and a total weight of approx. 3 t to ensure up to 3 days.
- a further embodiment of the invention can consist in that a refrigerant tank is arranged in a stationary manner on the rail locomotive and in particular via filling devices also known in the prior art Rapid filling devices with the refrigerant is supplied.
- the refrigerant tank serving as the refrigerant device is arranged so as to be exchangeable, in order in this way to ensure a continuous refrigerant supply to the superconducting transformer.
- the components are coupled by means of coupling devices known in the prior art.
- refrigerant tank instead of a refrigerant tank, it can also be provided that two or more smaller refrigerant tanks are interchangeably accommodated on the rail locomotive, so that it is ensured that at least one refrigerant tank is constantly in contact with the superconducting transformer while the empty one is being replaced other tanks against filled tanks.
- the superconducting transformer according to the invention does not contain any oil, so that there are no risks to the environment caused by leaks or fire.
- a superconducting transformer 1 is arranged together with a storage tank 2 filled with liquid gas, in particular nitrogen, in the machine room 10, symbolically indicated by a dashed line, of an electric locomotive, not shown in any more detail.
- the superconducting transformer 1 hangs under the floor of the motor vehicle between the chassis, which are also not shown in detail.
- This hanging underfloor arrangement which is also often chosen for conventional transformers, stems from the desire for a low center of gravity.
- gas-cooled current feedthroughs 3 At the top of the transformer 1 there are gas-cooled current feedthroughs 3, the current conductors of which are designed as heat exchangers which are cooled by the cold nitrogen gas which arises from the evaporation of liquid nitrogen as a result of electrical losses and heat leaks.
- This gas cooling reduces the heat input in the transformer cryostats through the current feedthroughs.
- a pressure relief valve 4 is provided to avoid excessive pressure in the cryostat, e.g. B. in case of accidents.
- the transformer 1 is connected via a heat-insulated liquid gas line 7 to the storage tank 2, from which the evaporating coolant is continuously refilled.
- a check valve 8 is provided in the liquid gas line 7 to protect the storage tank 2 from flowing back liquid and gaseous cooling gas and from excessive pressure.
- a shut-off valve 5 is arranged in the liquid gas line 7 on both sides of the detachable connection 6.
- the detachable connection 6 can also be designed as a quick coupling.
- the storage tank 2 is filled via a filling and safety fitting 9 arranged on its top.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
Description
Die Erfindung betrifft ein Schienentriebfahrzeug mit einem Transformator zu dessen Stromversorgung und mit einer Kältemittelversorgungseinrichtung.The invention relates to a rail vehicle with a transformer for its power supply and with a refrigerant supply device.
Ein Hauptanwendungsgebiet für Transformatoren herkömmlicher Bauart sind ganz allgemein Kraftwerksanlagen zur Erzeugung von Elektrizität. Bei derartigen Anlagen ist die Größe des benötigten Transformators von nachrangiger Bedeutung. Ein weiteres Anwendungsgebiet für Transformatoren bietet der Einsatz in elektrischen Schienenfahrzeugen. Hierbei wird üblicherweise die Fahrdrahtspannung mittels des implementierten Transformators auf die Speisespannung der Fahrmotoren bzw. der Stromrichter herabgesetzt. Für derartige sogenannte Traktionstransformatoren und ihre notwendigen Zusatzeinrichtungen, wie Öl- bzw. Luft-Kühler einschließlich erforderlicher Umwälzpumpen gelten starke Einschränkungen in bezug auf Gewicht und Abmessungen. Hieraus resultieren letztendlich im Vergleich zu stationären Leistungstransformatoren, die solchen Einschränkungen nicht unterworfen sind, hohe Verlustleistungen, die sich in einem niedrigen Wirkungsgrad auswirken.A main area of application for transformers of conventional design is in general power plants for the generation of electricity. In such systems, the size of the transformer required is of secondary importance. Another area of application for transformers is the use in electric rail vehicles. In this case, the contact wire voltage is usually reduced to the supply voltage of the traction motors or the power converters by means of the implemented transformer. For such so-called traction transformers and their necessary additional devices, such as oil or air coolers including the necessary circulation pumps, there are severe restrictions with regard to weight and dimensions. In comparison to stationary power transformers, which are not subject to such restrictions, this ultimately results in high power losses, which have a low efficiency.
Ein Schienentriebfahrzeug der eingangs genannten Art ist bekannt aus der SE-A-8904117. Hierbei ist der Transformator ölgefüllt, wobei das Öl zur Kühlung dient, das heißt zur Abfuhr der Verlustwärme einer vom Öl durchströmten als Wärmetauscher ausgebildeten Kältemittelversorgungseinrichtung, die mit dem Transformator verbunden ist.A rail locomotive of the type mentioned is known from SE-A-8904117. Here, the transformer is oil-filled, the oil being used for cooling, that is, for dissipating the heat loss of a oil-flowed heat exchanger trained refrigerant supply device which is connected to the transformer.
Ausgehend vom vorstehend genannten Stand der Technik ist es Aufgabe der Erfindung, ein Schienentriebfahrzeug mit einem Transformator der eingangs genannten Art zu schaffen, das einen guten Wirkungsgrad aufweist bei Vermeidung der hohen Verluste infolge räumlicher und gewichtsbezogener Beschränkungen, die durch den Transformator resultieren.Starting from the above-mentioned prior art, it is an object of the invention to provide a rail locomotive with a transformer of the type mentioned at the outset, which has good efficiency while avoiding the high losses due to spatial and weight-related restrictions which result from the transformer.
Die Lösung dieser Aufgabe besteht erfindungsgemäß in den kennzeichnenden Merkmalen des Patentanspruchs 1. Danach ist vorgesehen, daß ein supraleitender Transformator gemeinsam mit einer Kältemittelversorgungseinrichtung zum Einsatz gelangt, und daß die Kältemittelversorgungseinrichtung nur einen als Kältemitteltank dienenden Flüssiggasbehälter aufweist, der mit dem Transformator verbunden ist.This object is achieved according to the invention in the characterizing features of claim 1. It is provided that a superconducting transformer is used together with a refrigerant supply device, and that the refrigerant supply device has only one liquid gas container serving as a refrigerant tank, which is connected to the transformer.
Transformatoren mit supraleitenden Wicklungen sind seit einigen Jahren Gegenstand von zahlreichen weltweiten Entwicklungsaktivitäten. Aufgrund der niedrigen Betriebstemperatur von 4 bis 6 K, die für die heute großtechnisch verfügbaren Supraleiter zwecks Einhaltung ihrer Supraleitfähigkeit erforderlich ist, ist der Einsatz von teuren mit Helium betriebenen Kälteanlagen erforderlich. Ein Magnetsystem mit einer derartigen Kälteanlage ist beispielsweise aus der DE-OS 3 743 033 bekannt geworden.Transformers with superconducting windings have been the subject of numerous worldwide development activities for several years. Due to the low operating temperature of 4 to 6 K, which is required for the superconductors currently available on a large industrial scale in order to maintain their superconductivity, the use of expensive helium-operated refrigeration systems is necessary. A magnet system with such a refrigeration system has become known, for example, from DE-OS 3 743 033.
Für den Betrieb solcher Kälteanlagen werden zur Erzeugung von einem Watt Kälteleistung bei 4 K zwischen 1500 W bei kleinen Nennleistungen und 350 W Antriebsleistung bei Großanlagen benötigt. Nicht zuletzt aus diesem Grund ist der kommerzielle Einsatz von Transformatoren mit supraleitenden Spulenwicklungen bisher noch nicht in nennenswertem Maße erfolgt. Zudem weisen Gaskälteanlagen einen ungünstigen Teillastwirkungsgrad auf, der sich zusätzlich nachteilig auf die Leistungsbilanz auswirkt. Aus den vorgenannten Gründen wird daher im Vergleich zu ölgekühlten Transformatoren ein wirtschaftlich attraktiver Einsatz von supraleitenden Wicklungen für Leistungstransformatoren nur für große Nennleistungen und für den überwiegenden Vollastbetrieb erwartet. Dies gilt auch für den Einsatz der zur Zeit in der Entwicklung befindlichen sogenannten Hochtemperatursupraleiter (HTSL) mit Betriebstemperaturen um den Siedepunkt flüssigen Stickstoffs.For the operation of such refrigeration systems, to generate one watt of cooling power at 4 K between 1500 W with small nominal powers and 350 W drive power for large systems. Not least for this reason, the commercial use of transformers with superconducting coil windings has not yet taken place to any appreciable extent. In addition, gas refrigeration systems have an unfavorable partial load efficiency, which also has an adverse effect on the power balance. From the aforementioned For this reason, compared to oil-cooled transformers, an economically attractive use of superconducting windings for power transformers is only expected for large nominal powers and for predominantly full-load operation. This also applies to the use of the so-called high-temperature superconductors (HTSL) currently in development with operating temperatures around the boiling point of liquid nitrogen.
Mit der Auffindung der Hochtemperatursupraleiter ergaben sich neue Anwendungsperspektiven für den Einsatz von supraleitenden Wicklungen. Da die erforderliche Eingangsleistung zur Erzeugung von 1 W Kälteleistung nur noch 15 bis 35 W - abhängig von der Anlagengröße - beträgt, können auch kleinere Leistungstransformatoren wirtschaftlich betrieben werden. Eine untere Anwendungsgrenze kann mit ca. 100 MVA angegeben werden.The discovery of the high-temperature superconductors opened up new application prospects for the use of superconducting windings. Since the input power required to generate 1 W cooling power is only 15 to 35 W - depending on the size of the system - even smaller power transformers can be operated economically. A lower application limit can be specified with approx. 100 MVA.
In bevorzugter Weiterbildung der Erfindung ist als Kältemittel flüssiger Stickstoff vorgesehen, dessen im Vergleich zu Helium etwa 10-fache Verdampfungswärme es ermöglicht, bei einem Volumen von 1 bis 2 m³ und ca. 3 t Gesamtgewicht die Kühlung eines für diesen Einsatzzweck erforderlichen supraleitenden Transformators für 2 bis 3 Tage zu gewährleisten.In a preferred development of the invention, liquid nitrogen is provided as the refrigerant, which, compared to helium, enables about 10 times the heat of vaporization to cool a superconducting transformer for 2 with a volume of 1 to 2 m³ and a total weight of approx. 3 t to ensure up to 3 days.
Eine weitere Ausgestaltung der Erfindung kann darin bestehen, daß ein Kältemitteltank stationär auf dem Schienentriebfahrzeug angeordnet ist und über ebenfalls im Stand der Technik bekannte Befüllungseinrichtungen, insbesondere Schnellbefüllungseinrichtungen mit dem Kältemittel versorgt wird.A further embodiment of the invention can consist in that a refrigerant tank is arranged in a stationary manner on the rail locomotive and in particular via filling devices also known in the prior art Rapid filling devices with the refrigerant is supplied.
In weiterer Ausgestaltung der Erfindung kann vorgesehen sein, daß der als Kältemitteleinrichtung dienende Kältemitteltank auswechselbar angeordnet ist, um auf diese Weise eine kontinuierliche Kältemittelversorgung des supraleitenden Transformators sicherzustellen. Dabei erfolgt die Ankopplung der Komponenten mittels im Stand der Technik bekannter Kupplungseinrichtungen.In a further embodiment of the invention, it can be provided that the refrigerant tank serving as the refrigerant device is arranged so as to be exchangeable, in order in this way to ensure a continuous refrigerant supply to the superconducting transformer. The components are coupled by means of coupling devices known in the prior art.
Gemäß einer weiteren Variante kann anstelle eines Kältemitteltanks auch vorgesehen sein, daß zwei oder mehr kleinere Kältemitteltanks auswechselbar auf dem Schienentriebfahrzeug untergebracht sind, so daß sichergestellt ist, daß zumindest ein Kältemitteltank ständig in Verbindung steht mit dem supraleitenden Transformator, während der Austausch des oder der leeren anderen Tanks gegen gefüllte Tanks erfolgt.According to a further variant, instead of a refrigerant tank, it can also be provided that two or more smaller refrigerant tanks are interchangeably accommodated on the rail locomotive, so that it is ensured that at least one refrigerant tank is constantly in contact with the superconducting transformer while the empty one is being replaced other tanks against filled tanks.
Der Einsatz eines erfindungsgemäßen supraleitenden Transformators in Schienentriebfahrzeugen hat, zumindest was die Auswertung der Energiebilanz erkennen läßt, gegenüber herkömmlichen Transformatoren erhebliche Vorteile.The use of a superconducting transformer according to the invention in rail locomotives has, at least as can be seen from the evaluation of the energy balance, considerable advantages over conventional transformers.
Unter Annahme von Wechselstromverlusten des Supraleiters, die man bisher an einigen Materialproben gemessen hat, sind Gesamtverluste zu erwarten, die weniger als 25 % derer des herkömmlichen, ölgekühlten Traktionstransformators betragen.Assuming AC losses of the superconductor that have previously been measured on some material samples, total losses are expected to be less than 25% of those of the conventional oil-cooled traction transformer.
Ein weiterer Vorteil, der mit dem Einsatz supraleitender Traktionstransformatoren verbunden ist, ist im verminderten Gewicht eines solchen erfindungsgemäßen Transformators zu sehen, da es nur ca. 75 % des ölgekühlten Transformators beträgt, d. h., das Gewicht eines erfindungsgemäßen Transformators einschließlich des erforderlichen Kältemitteltanks ist deutlich geringer als das Gewicht eines konventionellen Transformators ohne Kühleinrichtungen. Hierbei ist zu berücksichtigen, daß ein für den Betrieb von herkömmlichen Transformatoren erforderlicher Öl- oder Luft-Kühler hier nicht erforderlich ist.Another advantage that is associated with the use of superconducting traction transformers can be seen in the reduced weight of such a transformer according to the invention, since it is only approx. 75% of the oil-cooled transformer, ie the weight of a transformer according to the invention including the required refrigerant tank is significantly lower than the weight of a conventional one Transformers without cooling devices. It should be noted here that an oil or air cooler required for the operation of conventional transformers is not required here.
Ein anderer wesentlicher Vorteil des erfindungsgemäßen supraleitenden Transformators gegenüber dem herkömmlichen öl- oder luftgekühlten Transformator ist in dem um etwa ein Drittel verminderten Raumbedarf zu sehen. Dies bedeutet, daß sich ein erfindungsgemäßer supraleitender Transformator gemeinsam mit dem erforderlichen Kältemitteltank in etwa dem gleichen Volumen wie der herkömmliche ölgekühlte Transformator mit Kühler unterbringen läßt.Another significant advantage of the superconducting transformer according to the invention over the conventional oil-cooled or air-cooled transformer can be seen in the space requirement which is reduced by about a third. This means that a superconducting transformer according to the invention can be accommodated together with the required refrigerant tank in approximately the same volume as the conventional oil-cooled transformer with a cooler.
Eine Ergänzung des verbrauchten Kältemittels ist, wie erwähnt, alle 2 bis 3 Tage erforderlich und kann innerhalb kurzer Zeit aus einem Standtank oder einer Kälteanlage, welche mit gutem Wirkungsgrad entsprechend viele Schienentriebfahrzeuge versorgt, aufgefüllt werden. Diesbezügliche Einrichtungen, insbesondere zur Versorgung mit Flüssigstickstoff gehören zum Stand der Technik.As mentioned, an expansion of the used refrigerant is necessary every 2 to 3 days and can be replenished within a short time from a standing tank or a refrigeration system, which supplies a large number of rail locomotives with good efficiency. Devices relating to this, in particular for the supply of liquid nitrogen, belong to the prior art.
Als letzter, jedoch deswegen nicht weniger bedeutsamer Vorteil ist hervorzuheben, daß der erfindungsgemäße supraleitende Transformator keinerlei Öl enthält, so daß Gefahren für die Umwelt durch Leckagen oder Brand entfallen.As a last advantage, but no less significant, it should be emphasized that the superconducting transformer according to the invention does not contain any oil, so that there are no risks to the environment caused by leaks or fire.
Anhand eines in der Zeichnung dargestellten Ausführungsbeispieles sollen die Erfindung, vorteilhafte Ausgestaltungen und besondere Vorteile der Erfindung näher erläutert und beschrieben werden.The invention, advantageous refinements and particular advantages of the invention are to be explained and described in more detail using an exemplary embodiment shown in the drawing.
Es zeigt die einzige Figur:
Eine schematische Darstellung der Anordnung eines erfindungsgemäßen Transformators auf einer elektrischen Lokomotive.It shows the only figure:
A schematic representation of the arrangement of a transformer according to the invention on an electric locomotive.
In der einzigen Figur ist ein supraleitender Transformator 1 gemäß der Erfindung gemeinsam mit einem mit Flüssiggas insbesondere Stickstoff befüllten Vorratstank 2 im symbolisch durch eine Strichlinie gekennzeichneten Maschinenraum 10 eines nicht näher dargestellten elektrischen Triebfahrzeugs angeordnet. Dabei hängt der supraleitende Transformator 1 unter dem Boden des Triebfahrzeugs zwischen den ebenfalls nicht näher dargestellten Fahrgestellen. Diese hängende Unterfluranordnung, die auch bei konventionellen Transformatoren häufig gewählt wird, entspringt dem Wunsch nach einem tiefliegenden Schwerpunkt.In the single figure, a superconducting transformer 1 according to the invention is arranged together with a
Während in der gezeigten Darstellung eine liegende Anordnung des supraleitenden Transformators 1 vorgesehen ist, könnte jedoch auch eine senkrecht stehende Einbaulage, wie sie bei konventionellen Transformatoren üblich ist, ebenfalls vorgesehen werden.While a horizontal arrangement of the superconducting transformer 1 is provided in the illustration shown, a vertical installation position, as is customary in conventional transformers, could also be provided.
An der Oberseite des Transformators 1 befinden sich gasgekühlte Stromdurchführungen 3, deren Stromleiter als Wärmetauscher ausgebildet sind, die von dem kalten Stickstoffgas gekühlt werden, welches durch die Verdampfung von flüssigem Stickstoff infolge elektrischer Verluste und Wärmelecks entsteht. Durch diese Gaskühlung wird eine Wärmeeinbringung in den Transformatorkryostaten durch die Stromdurchführungen reduziert. Zur Vermeidung unzulässigen Überdrucks im Kryostaten, z. B. bei Störfällen, ist ein Überdruckventil 4 vorgesehen.At the top of the transformer 1 there are gas-cooled current feedthroughs 3, the current conductors of which are designed as heat exchangers which are cooled by the cold nitrogen gas which arises from the evaporation of liquid nitrogen as a result of electrical losses and heat leaks. This gas cooling reduces the heat input in the transformer cryostats through the current feedthroughs. To avoid excessive pressure in the cryostat, e.g. B. in case of accidents, a pressure relief valve 4 is provided.
Der Transformator 1 ist über eine wärmeisolierte Flüssiggasleitung 7 mit dem Vorratstank 2 verbunden, aus welchem das verdampfende Kühlmittel kontinuierlich nachgefüllt wird. Zum Schutz des Vorratstanks 2 vor zurückströmendem flüssigen und gasförmigen Kühlgas sowie vor zu hohem Überdruck ist in der Flüssiggasleitung 7 ein Rückschlagventil 8 vorgesehen. Außerdem befindet sich in der Flüssiggasleitung 7 eine lösbare Verbindungsstelle 6, welche es ermöglicht, bei Wartungsarbeiten, z. B. Füllen oder Wechseln des bzw. der Vorratstanks 2, diesen von dem Transformator 1 zu lösen. Hierzu sind beiderseits der lösbaren Verbindung 6 je ein Absperrventil 5 in der Flüssiggasleitung 7 angeordnet. Bei Einsatz von Wechselbehältern kann die lösbare Verbindung 6 auch als Schnellkopplung ausgebildet sein.The transformer 1 is connected via a heat-insulated
Die Befüllung des Vorratstanks 2 erfolgt über eine an seiner Oberseite angeordnete Befüll- und Sicherheitsarmatur 9.The
Claims (6)
- Electric railway traction unit, in particular electric locomotive with a transformer for supplying it with power and with a coolant supply device, characterized in that a superconductive transformer is provided which, together with the coolant supply device, is arranged on the railway traction unit, and in that the coolant supply device is formed exclusively by a liquid gas container which serves as a coolant tank and is connected to the superconductive transformer.
- Transformer according to Claim 1, characterized in that liquid nitrogen is provided as coolant.
- Transformer according to either of Claims 1 or 2, characterized in that the coolant tank can be filled with coolant, in particular with nitrogen, from a floormounted tank or from a coolant system by means of a highspeed filling device.
- Transformer according to one of the preceding claims, characterized in that the coolant tank which serves as a coolant supply device is arranged in a replaceable manner.
- Transformer according to Claim 4, characterized in that at least two replaceable coolant tanks are provided.
- Transformer according to either of Claims 3 or 4, characterized in that there is provision for the replacement of the empty coolant tank with a full coolant tank.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4232703A DE4232703C2 (en) | 1992-09-30 | 1992-09-30 | Electric railcar with a transformer |
| DE4232703 | 1992-09-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0590546A1 EP0590546A1 (en) | 1994-04-06 |
| EP0590546B1 true EP0590546B1 (en) | 1996-05-29 |
Family
ID=6469178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93115499A Revoked EP0590546B1 (en) | 1992-09-30 | 1993-09-25 | Railway traction unit with a superconductive transformer |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0590546B1 (en) |
| DE (2) | DE4232703C2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6324851B1 (en) | 1999-12-09 | 2001-12-04 | Abb Power T&D Company Inc. | Cryostat for use with a superconducting transformer |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4412412C2 (en) * | 1994-04-11 | 1996-03-28 | Siemens Ag | Locomotive transformer and winding arrangement for this |
| DE19515003C2 (en) * | 1995-04-24 | 1997-04-17 | Asea Brown Boveri | Superconducting coil |
| US7073340B2 (en) | 2003-10-20 | 2006-07-11 | Waukesha Electric Systems | Cryogenic compressor enclosure device and method |
| DE102014208437A1 (en) * | 2014-05-06 | 2015-11-12 | Siemens Aktiengesellschaft | Cooling device for at least two components to be cooled, rail vehicle and method of cooling |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1488209B2 (en) * | 1964-07-31 | 1971-04-01 | Licentia Patent Verwaltungs GmbH, 6000 Frankfurt | TRANSFORMER FOR TRACTION IN PARTICULAR LOCOMOTIVE TRANSFORMER |
| JPS6489413A (en) * | 1987-09-30 | 1989-04-03 | Toshiba Corp | Superconductive transformer |
| DE3743033A1 (en) * | 1987-12-18 | 1989-06-29 | Asea Brown Boveri | MAGNETIC SYSTEM |
| JPH02286442A (en) * | 1989-04-28 | 1990-11-26 | Furukawa Electric Co Ltd:The | Liquefied gas transport vehicle |
| DE3914426C2 (en) * | 1989-05-02 | 1994-11-10 | Eckart Dipl Ing Berling | Hybrid drive unit consisting of high-temperature superconductor electric motor and liquid hydrogen internal combustion engine |
-
1992
- 1992-09-30 DE DE4232703A patent/DE4232703C2/en not_active Expired - Fee Related
-
1993
- 1993-09-25 EP EP93115499A patent/EP0590546B1/en not_active Revoked
- 1993-09-25 DE DE59302735T patent/DE59302735D1/en not_active Revoked
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6324851B1 (en) | 1999-12-09 | 2001-12-04 | Abb Power T&D Company Inc. | Cryostat for use with a superconducting transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4232703C2 (en) | 2001-07-26 |
| DE4232703A1 (en) | 1994-03-31 |
| EP0590546A1 (en) | 1994-04-06 |
| DE59302735D1 (en) | 1996-07-04 |
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